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Publication Detail
Dual-Task Interference in Spatial Reorientation: Linguistic and Nonlinguistic Factors
Language has been proposed as a medium that serves to promote spatial orientation through integrating geometric and featural information (Spelke, 2003). This proposal has been explored in dual-task experiments where linguistic resources are blocked by verbal shadowing. Although some studies report disruption in using environmental cues for spatial reorientation, findings have not been consistently replicated, and the source of disruption to reorientation by verbal shadowing remains unclear. We examined conditions under which verbal shadowing affects reorientation. Shadowing of meaningful language disrupted healthy adults' use of geometric and featural information to reorient only when task instructions were unclear and when extraneous visual information provided a source of nonlinguistic interference. Reorientation was examined during the shadowing of meaningful prose or nonword syllables and was similar under both concurrent task conditions. These results indicate that language is not necessary for spatial cue integration. © 2013 Copyright Taylor and Francis Group, LLC.
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